Manual 2100-670B
Page
19 of 33
To view the output of the condenser fan:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
TECHNICIAN password 1313.
3. Press UP or DOWN keys to scroll to
I/O Config
;
press ENTER key.
4. Press UP or DOWN keys to scroll to
Condenser Fan
(C15)
; press ENTER key.
5. Reference
Fan Speed
parameter for the current
output to the condenser fan
(see Figure 23).
FIGURE 23
Verifying Condenser Fan Output
If required, the condenser fan output can be manually
set for 5 minutes for troubleshooting purposes.
While looking at
Condenser Fan (C15)
screen:
1. Press ENTER key to scroll to
Fan OV Speed
(see
Figure 23).
2. Press UP or DOWN keys to change the value to the
desired override speed.
3. Press ENTER key to save the value and move
cursor to the
Override
parameter.
4. Press UP or DOWN keys to change the value from
Disabled
to
Enabled
.
5. The fan should now run at the selected speed. The
output can be verified by again referencing the
Fan
Speed
parameter.
The override will last for 5 minutes or until the
Override
parameter is set to
Disabled
again.
Due to design considerations of the condenser section
of the wall unit, placement/clearance of the motor/
fan blade is critical to heat dispersal. Should a change
of motor or fan blade be necessary, see Figure 24 for
proper clearance adjustment.
Liquid Line Pressure Transducer
The unit has a pressure transducer installed on the
liquid line between the condenser and electronic
expansion valve (EEV). The transducer is used for
system monitoring of the liquid side system pressures.
FIGURE 24
Fan Blade Setting
.75"
This information is used to indicate when outdoor coil
cleaning is necessary based on outdoor conditions and
system pressures. The sensor is also used to adapt
the condenser fan speed for high and low ambient
conditions. The liquid line transducer is also referred to
as the discharge pressure sensor.
The discharge pressure sensor input can be verified and
adjusted by:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
TECHNICIAN password 1313.
3. Press UP or DOWN keys to scroll to
I/O Config
;
press ENTER key.
4. Press UP or DOWN keys to scroll to
Disch Pr
Sensor (C10)
; press ENTER key.
5. Verify the measurement displayed on screen is
accurate (see Figure 25).
6. If the measurement needs to be adjusted, apply an
offset value by pressing the ENTER key to scroll to
Offset
.
7. Press UP or DOWN keys to adjust the offset. The
update will not take effect until the cursor is
moved out of the offset parameter.
8. Once adjusted, the ESCAPE key several times to
return to Main Menu screen.
FIGURE 25
Adjusting Discharge/Liquid Transducer
Pressure Values
